Engines and Components› Pistons and Piston Rings

JE Pistons

GM LT1 ASYMMERICAL KIT

$211.10

SKU: J001 338680L

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Description

The JE Pistons 338680L is a single piston designed for Chevrolet LT1 Gen V engines. It features a 4.070-inch bore and a 1.304-inch compression height with a dome top. The piston is constructed from 2618 aluminum for high tensile strength.

This piston is engineered with a proprietary Forged Side Relief (FSR) design to minimize friction and power loss. It also includes features like skirt coating to reduce friction and wear, and an accumulator groove to improve ring seal. All JE Pistons are made 100% in the USA.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandJE Pistons
Part NumberJ001 338680L

Videos

Introducing the Strongest Pistons in Powersports | JE Ultra Series

Introducing the Strongest Pistons in Powersports | JE Ultra Series
Why Forged Pistons Are BETTER Than Cast | JE Ultra Series Pistons [TECH TALK]

Why Forged Pistons Are BETTER Than Cast | JE Ultra Series Pistons [TECH TALK]
Piston Coatings 101: Which is the Right One for You?

Piston Coatings 101: Which is the Right One for You?
How to identify your JE Pistons

How to identify your JE Pistons
How to Measure Piston to Wall Clearance on a JE Perfect Skirt Piston

How to Measure Piston to Wall Clearance on a JE Perfect Skirt Piston
JE Pistons Asymmetrical Design Overview

JE Pistons Asymmetrical Design Overview
Which Forged Pistons Are Right For Your Build? | 🏁 Fast Facts

Which Forged Pistons Are Right For Your Build? | 🏁 Fast Facts
Cast vs. Forged Pistons: Which One is Best for Your Engine?

Cast vs. Forged Pistons: Which One is Best for Your Engine?
What Are Abradable Coatings On Pistons? Is It Worth Adding? - Jays Tech Tip

What Are Abradable Coatings On Pistons? Is It Worth Adding? - Jays Tech Tip
The LIGHTEST Pistons EVER: Introducing Hollow Crown

The LIGHTEST Pistons EVER: Introducing Hollow Crown
Which SRP Piston is Right for You?

Which SRP Piston is Right for You?
Difference Between 2618 and 4032 Forged Pistons

Difference Between 2618 and 4032 Forged Pistons
How to flycut pistons on GM's LS & LT engines with GPI's Flycut Tool

How to flycut pistons on GM's LS & LT engines with GPI's Flycut Tool

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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